During the COVID-19 pandemic, some patients would be tested with an oximeter only for it to read above 99 percent. Yet, during a medical checkup, they would be found to have a “lack of oxygen in the heart,” or hypoxia. Why is this?
It has to do with the type of hypoxia one has. According to Dr. Chungpin Liu, a cardiologist and the director of Yupin Clinic in Taiwan, there are three types of hypoxia.
The first is caused by not inhaling enough oxygen. For instance, drowning, choking on food, having a COVID-19 infection, or having other lung diseases, can cause low blood oxygen….